/in/foo.cc: In function 'int main()':
/in/foo.cc:5:75: error: 'to_string' was not declared in this scope; did you mean 'std::__cxx11::to_string'?
    5 |     std::cin>>t;for(int i=1;i<=t;i++){std::cin>>p[i];std::cout<<(p[i]>20)?to_string(p[i]):(p[i]>10)?'L':'R';}
      |                                                                           ^~~~~~~~~
      |                                                                           std::__cxx11::to_string
In file included from /usr/include/c++/12/string:53,
                 from /usr/include/c++/12/bits/locale_classes.h:40,
                 from /usr/include/c++/12/bits/ios_base.h:41,
                 from /usr/include/c++/12/ios:42,
                 from /usr/include/c++/12/istream:38,
                 from /usr/include/c++/12/sstream:38,
                 from /usr/include/c++/12/complex:45,
                 from /usr/include/c++/12/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/12/bits/stdc++.h:54,
                 from /in/foo.cc:1:
/usr/include/c++/12/bits/basic_string.h:4103:3: note: 'std::__cxx11::to_string' declared here
 4103 |   to_string(long double __val)
      |   ^~~~~~~~~